Mass update functionalities for Material BOMs and Routings in S/4 HANA Cloud 2208

We have migrated Legacy data via the Migration cockpit for Material BOMs and Routings into the Cloud.

Then we realized all the quantities got uploaded wrong due to Decimal notation issue.

Now we need to mass change all the times in the routings and the quantities on both Routings and BOMs to correct the wrong data, as there are thousands of entries to be changed.

Unfortunatley, we did not find any app that allows this. How can this be done in the Cloud?